class A:
    x = 1


class B(A):
    pass


class C(A):
    pass


if __name__ == '__main__':
    print(A.x, B.x, C.x)
    B.x = 2
    print(A.x, B.x, C.x)
    C.x = 3
    print(A.x, B.x, C.x)

    '\xe9'.encode('ascii')